CS61600
Semiconductor Corporation
PCM Jitter Attenuator
Features
General Description
•
The CS61600 from Crystal Semiconductor accepts T1
(1.544 Mb/s) or CCITT standard (2.048 Mb/s) data and
clock inputs, and tolerates at least 7 (and up to 14) unit
intervals, peak-to-peak, of jitter. Before outputting data
and clock, jitter is attenuated using an internal clocktracking variable oscillator and a 16 bit FIFO elastic
store.
Unique Clock-Tracking Circuitry Filters
50 Hz or Higher Frequency Jitter for
T1 and PCM-30 Applications
• Minimal External Components Required
• 14 Pin DIP
• Single 5 Volt Supply
• 3 Micron CMOS for High Reliability
The jitter attenuation function can be determined by
appropriate specification of the external crystal.
The CS61600 is transparent to data format, and is intended for application in carrier systems, switching
systems, Local Area Network gateways and multiplexers.
and Low Power Dissipation: 50 mW
Typical at 25 °C
FIFORST
ORDERING INFORMATION
CS61600-IP1 - 14 Pin Plastic DIP; T1 and 2.048 MHz
OVR
2
RESET
3
1
FIFO CONTROL
DIN
CLKIN
13
9
16-BIT FIFO
8
10
6
HALF FULL
DETECT
12
14
VARIABLE OSCILLATOR
4
XTALIN
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
5
XTALOUT
÷4
7
DOUT
CLKOUT
ARE
ARC
V+
GND
11
OSCOUT
Copyright © Crystal Semicondutor Corporation 1994
(All Rights Reserved)
APR ’90
DS9F3
1
